{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:SUKFEHPW2CTHLBJQOQL5DNCL4O","short_pith_number":"pith:SUKFEHPW","schema_version":"1.0","canonical_sha256":"9514521df6d0a67585307417d1b44be3aef9f69af8d64a672ec2a9815963ea1e","source":{"kind":"arxiv","id":"1904.02035","version":2},"attestation_state":"computed","paper":{"title":"Extraction of energy from an extremal rotating electrovacuum black hole: Particle collisions along the axis of symmetry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"F. Hejda, J. Bi\\v{c}\\'ak, O. B. Zaslavskii","submitted_at":"2019-04-03T14:45:31Z","abstract_excerpt":"High-energy collisions can occur for radially moving charged test particles in the extremal Reissner-Nordstr\\\"om spacetime if one of the particles is fine-tuned and the collision point is taken close to the horizon. This is an analogy of the Banados-Silk-West (BSW) effect, first described for extremal Kerr black holes. However, it differs significantly in terms of energy extraction: unlike for the original BSW process, no unconditional upper bounds on mass and energy of an escaping test particle produced in the collision were found for the charged version. We show that these results can be rep"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1904.02035","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-04-03T14:45:31Z","cross_cats_sorted":[],"title_canon_sha256":"51fd5c2f8e2311462e2c879203b5cd82daa4a2aab078e3fd9303e36ccf91a86b","abstract_canon_sha256":"d2919a840d62f637707729877183dab5ca29479e869bffa155d2c45dae38fcd3"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:11:57.974007Z","signature_b64":"wNC1nCO7COnbElvZOnswSOdY6spuezzgiW9arHcL3GX+DYTCktHto0F1d+IkyM4A8/TpwIS/O4EtN3jaJhNcCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9514521df6d0a67585307417d1b44be3aef9f69af8d64a672ec2a9815963ea1e","last_reissued_at":"2026-07-05T00:11:57.973585Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:11:57.973585Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Extraction of energy from an extremal rotating electrovacuum black hole: Particle collisions along the axis of symmetry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"F. Hejda, J. Bi\\v{c}\\'ak, O. B. Zaslavskii","submitted_at":"2019-04-03T14:45:31Z","abstract_excerpt":"High-energy collisions can occur for radially moving charged test particles in the extremal Reissner-Nordstr\\\"om spacetime if one of the particles is fine-tuned and the collision point is taken close to the horizon. This is an analogy of the Banados-Silk-West (BSW) effect, first described for extremal Kerr black holes. However, it differs significantly in terms of energy extraction: unlike for the original BSW process, no unconditional upper bounds on mass and energy of an escaping test particle produced in the collision were found for the charged version. We show that these results can be rep"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.02035","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1904.02035/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1904.02035","created_at":"2026-07-05T00:11:57.973641+00:00"},{"alias_kind":"arxiv_version","alias_value":"1904.02035v2","created_at":"2026-07-05T00:11:57.973641+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.02035","created_at":"2026-07-05T00:11:57.973641+00:00"},{"alias_kind":"pith_short_12","alias_value":"SUKFEHPW2CTH","created_at":"2026-07-05T00:11:57.973641+00:00"},{"alias_kind":"pith_short_16","alias_value":"SUKFEHPW2CTHLBJQ","created_at":"2026-07-05T00:11:57.973641+00:00"},{"alias_kind":"pith_short_8","alias_value":"SUKFEHPW","created_at":"2026-07-05T00:11:57.973641+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2411.14528","citing_title":"Penrose and super-Penrose energy extraction from a Reissner-Nordstr\\\"om black hole spacetime with a cosmological constant through the BSW mechanism: Full story","ref_index":55,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/SUKFEHPW2CTHLBJQOQL5DNCL4O","json":"https://pith.science/pith/SUKFEHPW2CTHLBJQOQL5DNCL4O.json","graph_json":"https://pith.science/api/pith-number/SUKFEHPW2CTHLBJQOQL5DNCL4O/graph.json","events_json":"https://pith.science/api/pith-number/SUKFEHPW2CTHLBJQOQL5DNCL4O/events.json","paper":"https://pith.science/paper/SUKFEHPW"},"agent_actions":{"view_html":"https://pith.science/pith/SUKFEHPW2CTHLBJQOQL5DNCL4O","download_json":"https://pith.science/pith/SUKFEHPW2CTHLBJQOQL5DNCL4O.json","view_paper":"https://pith.science/paper/SUKFEHPW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1904.02035&json=true","fetch_graph":"https://pith.science/api/pith-number/SUKFEHPW2CTHLBJQOQL5DNCL4O/graph.json","fetch_events":"https://pith.science/api/pith-number/SUKFEHPW2CTHLBJQOQL5DNCL4O/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SUKFEHPW2CTHLBJQOQL5DNCL4O/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SUKFEHPW2CTHLBJQOQL5DNCL4O/action/storage_attestation","attest_author":"https://pith.science/pith/SUKFEHPW2CTHLBJQOQL5DNCL4O/action/author_attestation","sign_citation":"https://pith.science/pith/SUKFEHPW2CTHLBJQOQL5DNCL4O/action/citation_signature","submit_replication":"https://pith.science/pith/SUKFEHPW2CTHLBJQOQL5DNCL4O/action/replication_record"}},"created_at":"2026-07-05T00:11:57.973641+00:00","updated_at":"2026-07-05T00:11:57.973641+00:00"}